William j



UNITED STATES PATENT OFFICE.

IVILLIAM J. OIVENS, OF UTICA, NEW YORK, ASSIGNOR TO TI-IE KERNAN FURNAOE COMPANY, OF SAME PLACE.

` G RAT E BA R SPECIFICATION forming part of Letters Patent No. 443,461, dated December 23, 1890.

' Application filed June 18, 1890` Serial No. 355,833. (No model.)

To call whom it may conccrn:

Be it known that I, WILLIAM J. OWENS, of Utica, in the county of Oneida and State of New York, have invented certain new and useful Improvements in Grate-Bars; and I do hereby declare that the following is a full, clear, and eXact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

My invention relates to an improvement in furnace-grates.

In the drawings which accompany and form a part of this specification, and in which similar letters and figures of reference refer to corresponding parts in the several figures, Figure 1 shows the upper surface of a set of three grate-bars constructed in accordance with my improvement-s in position for use in the base of a furnace. Fig. 2 shows a crosssection of the bars on line A B of Fig. 1.

Reference-numeral l indicates a grate-bar inounted in suitable bearings 2 at the front and 3 at the rear of the base co, so that the grate-bars are capable of being rotated for clearing or shaking the same. The gratebars are through their length, where they come in contact with the fire, constructed substantially triangular in shape, as shown at 5 in Fig. 2, having leaves 4 formed upon the bar integral therewith, three of the leaves surrounding the bar or being disposed in the same circle around the bar, and the three taken together forming in general Outline substantially a triangle, and the triangle of the body of the bar sustaining or being substantially in the relation to the triangle forn'ied by the leaves of that of an inscribed triangle. It will be observed of the construction shown in Fig. 2 that the bar and outline of the figure formed by 1he leaves of the bar are a slight Variation from a true triangle, or what may be termed a hexagonal. The leaves 4 of the grate-bar support the fuel of the fire, leaving a clear air-space below the fire, and the trian'gular form, with the vertices of the angle of the bar cntting the sides of the triangle formed by the Outline of the leaves, presents such an angle to the fire that the ashes will not wedge or lodge upon the top of the bar, and thns obstruct the free circulation of the air to the fire. eral leaves on the opposite side of the bars form a plane face for the surface of the grate, and the leaves of the several grate-bars are in substantially the same line across the surface of the grate. It Will also be observed that in this construction of bar the bar proper with reference to its leaves is much heavier and stronger proportionately than it would otherwise be and than many bars in common use are; that the form of the bar is such that it is in correct Working position at any of the three points in its revolution and is equally strong to sustain the weight of fuel or resist warping in any of its several positions.

What I claim as new, and desire to secure by Letters Patent, is-- A grate composed of substantially triangular grate-bars having leaves formed at intervals thereon, the leaves in sets of three surrounding the bar at each interval and presenting in general Outline substantially the form of a regular triangle, the triangle of the grate-bar sustaining the relation of an inscribed triangle to the triai'lgle of the leaves, and the adjacent faces of the leaves on opposite sides of the bar forming a plane face for the surface of the grate, and the leaves of the several grate-bars being in snbstantially the same line across the surface of the grate, substantially as set forth.

In witness Whereof I have affixed my signature in presence of two witnesses.

WILLIAM J. OWENS.

Witnesses:

M. E. RonlNsoN, EDWIN II. RIsLEY.

The faces of the sev- 

